The following rules outline the guidelines for naming classes:
- Use a noun or noun phrase to name a class.
- Use Pascal case.
- Use abbreviations sparingly.
- Do not use a type prefix, such as C for class, on a class name. For example, use the class name FileStream rather than CFileStream.
- Do not use the underscore character (_).
- Occasionally, it is necessary to provide a class name that begins with the letter I, even though the class is not an interface. This is appropriate as long as I is the first letter of an entire word that is a part of the class name. For example, the class
name IdentityStore is appropriate.
- Where appropriate, use a compound word to name a derived class. The second part of the derived class's name should be the name of the base class. For example, ApplicationException is an appropriate name for a class derived from a class named Exception,
because ApplicationException is a kind of Exception. Use reasonable judgment in applying this rule. For example, Button is an appropriate name for a class derived from Control. Although a button is a kind of control, making Control a part of the class name
would lengthen the name unnecessarily.
The following are examples of correctly named classes.
public class FileStream
public class Button
public class String